A couple of things to try...if you have another video card...replace that with the one that's in your computer...if the problem continues...it's possible that the LCD is bad...something else to try is connecting your LCD to another computer...if if happens again...most likely it's a bad LCD...do you have another monitor or LCD...if so...try that and see if the problem continues...

If all you do is unplug the LCD monitor and plug it back in, I think it's the monitor - a bad video card would not likely come back up just because the monitor got reset. This sounds like a power problem in the monitor.

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